While trying to load some kernel modules in one of my projects, I encounter the following errors: root@ubuntu:~# modprobe carl9170 modprobe: ERROR: ../libkmod/libkmod.c:556 kmod_search_moddep() could not open moddep file '/lib/modules/3.10.17/modules.dep.bin' and the following error: modprobe: ERROR: ../libkmod/libkmod-index.c:821 index_mm_open() magic check fail: d00dfeed instead of b007f457 To solve this issue, run depmod # depmod From http://manpages.ubuntu.com/manpages/dapper/man8/depmod.8.html : "depmod creates a list of module dependencies, by reading each module under /lib/modules/ version and determining what symbols it exports, and what symbols it needs. By default this list is written to modules.dep in the same directory. If filenames are given on the command line, only those modules are examined (which is rarely useful, unless all modules are listed)." After running depmod, everything should work as expected. - Tal K